A charity co-founded by Prince Harry is suing him for libel at London’s High Court following a high-profile dispute that led to his resignation as patron.

Harry, the younger son of King Charles, co-founded Sentebale in 2006 to help ​young people with HIV and AIDS in ​Lesotho ⁠and Botswana, but resigned as a patron in March 2025 after a public falling-out with its chair of the board, Sophie Chandauka.

According to a record made public on Friday, Sentebale lodged a defamation claim last month at the High Court against Harry and one of his close friends Mark Dyer, who was also a trustee of the charity.

The charity said it was seeking the court's "intervention, protection, and restitution" following an "adverse media campaign" conducted since last March ⁠that ⁠had "caused operational disruption and reputational harm to the charity, its leadership, and its strategic partners".

"The proceedings have been brought against Prince Harry and Mark Dyer, identified through evidence as the architects of that adverse media campaign, which has had significant viral impact and triggered an onslaught of cyber-bullying directed at the charity and its leadership," the charity's statement said.